クラス名オーバーレイ表示 is a Chrome add-on designed to enhance web development by displaying class names of page elements when hovered over. This tool is particularly useful for developers who need to quickly verify the appropriateness of class names used on a webpage. It provides an intuitive overlay that appears upon mouseover, making it easier to identify and analyze the structure of web pages.

This free add-on falls under the category of browsers and specifically targets those who work with web design and development. By facilitating a clearer understanding of CSS classes in real-time, it simplifies the debugging process and aids in ensuring that the website's styling aligns with intended designs. Overall, it serves as a practical tool for enhancing workflow efficiency in web development tasks.